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Species of shrimp From Wikipedia, the free encyclopedia
Macrobrachium grandimanus, also called Hawaiian river shrimp or ʻopae ʻoeahaʻa in Hawaiian, is a species of shrimp. It has an amphidromous life cycle and is endemic to the Hawaiʻi islands.
 | This article includes a list of general references, but it lacks sufficient corresponding inline citations. (November 2021) |
| Macrobrachium grandimanus | |
|---|---|
| |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| Infraorder: | Caridea |
| Family: | Palaemonidae |
| Genus: | Macrobrachium |
| Species: | M. grandimanus |
| Binomial name | |
| Macrobrachium grandimanus Randall, 1840 | |
The Hawaiian river shrimp is light to dark brown in color and grows to eight centimeters in length. It has asymmetric pincer claws unlike any other shrimps in Hawai'i. They scavenge at the bottom of slow flowing streams for animal and plant material. They reproduce year round with an incubation period lasting approximately three to four weeks. After hatching, the larvae gets washed down into the ocean where they spend a month developing before they return to streams to mature.
Historic distribution includes all the main islands in Hawai'i that consist of everlasting streams. They currently can be found high quality streams in Kaua‘i, O‘ahu, Moloka‘i, Maui, and Hawai‘i as well as wetlands, small ponds, and closed off body of waters.
Hawaiian river shrimp are not caught for food or used in any way.
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